Solve the system of equations.

Give your answer as an ordered pair (x, y)

4x + 8y = 20

-4x + 2y = - 30

(7, - 1)

Step-by-step explanation:

4x + 8y = 20 equation 1

-4x + 2y = - 30 equation 2

using equation 2 we have:

2y = - 30 + 4x

y = (-30 + 4x) / 2

y = - 15 + 2x equation 3

using equation 3 in equation 1 we have:

4x + 8 (-15+2x) = 20

4x - 120 + 16x = 20

20x - 120 = 20

20x = 20+120

20x = 140

x = 140/20

x = 7

and we have:

y = - 15 + 2 (7)

y = - 15+14

y = - 1